Cut a nice clean entry hole just up the strut a bit. Then, go in the entry hole and pull the unglued area out so you can work on it. Once you're 99% sure (I mean...we are talking glueing a valve, who is ever 100%??) you've got the valve glued up nice, close up the entry slot with some tearaid.

In the past I glued them back on from the outside and it worked ok. That is the valve ended up on the outside rather than the inside. I dislike putting more holes in a bladder
Now when I get that issue I find it simpler to remove the one pump system and go with an individual inflation system.

JGTR wrote:Really? You find it simpler to remove all the bladders from your kite and replace with a complete new set without one pump than just re- glueing a valve or replacing the faulty bladder???

Sounds very time consuming and expensive

I and done this and it was completely worth it. You are also simplifying your bladder system to avoid more complicated future repairs. I live in an area where most launches come with consequences if you make mistakes. it is simpler and quicker if i just repair the bladders myself. Screwing with one pump systems definitely adds to repair time especially when removal and replacement causes other bladder connections to start failing. One pump systems are over rated in my opinion.